VulnerabilityModified
CVE-2026-43997
This vulnerability is fixed in 3.11.0.
CRITICAL 10.0EPSS 0.98%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.98%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
vm2 is an open source vm/sandbox for Node.js. Prior to 3.11.0, it is possible to obtain the host Object. There are various ways to use the host Object, to escape the sandbox, one example would be using HostObject.getOwnPropertySymbols to obtain Symbol(nodejs.util.inspect.custom). This vulnerability is fixed in 3.11.0.
- CVSS 3.1
- 10.0 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
- EPSS
- 0.98% probability · 60th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-94, CWE-653
- Affected
- vm2 project/vm2
- Source
- security-advisories@github.com
References
- https://github.com/patriksimek/vm2/security/advisories/GHSA-47x8-96vw-5wg6Exploit, Vendor Advisory
- https://access.redhat.com/errata/RHSA-2026:50850
- https://access.redhat.com/security/cve/CVE-2026-43997
- https://bugzilla.redhat.com/show_bug.cgi?id=2477203
- https://github.com/patriksimek/vm2/security/advisories/GHSA-47x8-96vw-5wg6Exploit, Vendor Advisory
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-43997.json
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.